Self-adaptive large neighborhood search algorithm for parallel machine scheduling problems

A self-adaptive large neighborhood search method for scheduling n jobs on m non-identical parallel machines with mul- tiple time windows is presented. The problems＇ another feature lies in oversubscription, namely not all jobs can be scheduled within specified scheduling horizons due to the limited machine capacity. The objective is thus to maximize the overall profits of processed jobs while respecting machine constraints. A first-in- first-out heuristic is applied to find an initial solution, and then a large neighborhood search procedure is employed to relax and re- optimize cumbersome solutions. A machine learning mechanism is also introduced to converge on the most efficient neighborhoods for the problem. Extensive computational results are presented based on data from an application involving the daily observation scheduling of a fleet of earth observing satellites. The method rapidly solves most problem instances to optimal or near optimal and shows a robust performance in sensitive analysis.

Rapid evolution of T2/S-RNase genes in Fragaria linked to multiple transitions from self-incompatibility to self-compatibility

The T2/RNase gene family is widespread in eukaryotes,and particular members of this family play critical roles in the gametophytic self-incompatibility(GSI) system in plants.Wild diploid strawberry(Fragaria)species have diversified their sexual systems via self-incompatible and self-compatible traits,yet how these traits evolved in Fragaria remains elusive.By integrating the published and de novo assembled genomes and the newly generated RNA-seq data,members of the RNase T2 gene family were systematically identified in six Fragaria species,including three self-incompatible species(Fragaria nipponica,Fragaria nubicola,and Fragaria viridis) and three self-compatible species(Fragaria nilgerrensis,Fragaria vesca,and Fragaria iinumae).In total,115 RNase T2 genes were identified in the six Fragaria genomes and can be classified into three classes(Ⅰ-Ⅲ) according to phylogenetic analysis.The identified RNase T2 genes could be divided into 22 homologous gene sets according to amino acid sequence similarity and phylogenetic and syntenic relationships.We found that extensive gene loss and pseudogenization coupled with small-scale duplications mainly accounted for variations in the RNase T2 gene numbers in Fragaria.Multiple copies of homologous genes were mainly generated from tandem and segmental duplication events.Furthermore,we newly identified five S-RNase genes in three self-incompatible Fragaria genomes,including two in F.nipponica,two in F.viridis,and one in F.nubicola,which fit for typical features of a pistil determinant,including highly pistil-specific expression,highly polymorphic proteins and alkaline isoelectric point(pI),while no S-RNase genes were found in all three selfcompatible Fragaria species.Surprisingly,these T2/S-RNase genes contain at least one large intron(>10 kb).This study revealed that the rapid evolution of T2/S-RNase genes within the Fragaria genus could be associated with its sexual mode,and repeated evolution of the self-compatible traits in Fragaria was convergent via losses of S-RNase.

Region coverage control for multiple stratospheric airships with combined self-/event-triggered mechanism

The region coverage control problem of multiple stratospheric airships system is firstly addressed in this paper.Towards it,we propose a two-layer control framework with the artificial potential field(APF)-based region coverage control law and the adaptive tracking control law.The APF-based region coverage control law ensures the coverage task is achieved until every single stratospheric airship ends up performing station keeping where near the respective global minimum point,in which an innovative solution to the local minimum problem is put forward.The adaptive tracking control law is designed to realize motion control using tracking the desired velocity and angular velocity given by coverage control law,with the consideration of several practical control problems as unknown individual differences and external disturbances.To save resources,the combined self-/event-triggered mechanism designed therein significantly reduces the times of state information transmission and control law calculation.The effectiveness of the proposed control framework is verified through simulations.

Performance Study of an FFH/BFSK Self-Normalizing Receiver with Multitone Jamming's Frequency Offsets

This study investigates how frequency offsets of multitone jamming affect the fast frequencyhopped binary frequency shift keying （FFH/BFSK） self-normalizing （SNZ） receiver under additive white Gaussian noise （AWGN）. The average bit-error-rate （BER） expressions of the FFH/BFSK SNZ receiver and the average BER expressions of an FFH/BFSK spread-spectrum （SS） communication system with frequency offsets of multitone jamming for the sake of understanding the simulation results better. Simulation results show that BER performance of the FFH/BFSK SNZ receiver with diversity under the worst case multitone jamming （MTJ） and AWGN suffers from multitone jamming＇s frequency offsets when the jamming power is moderate, which is validated by several simulations with different frequency offsets configured in multitone jamming. Therefore, an FFH/BFSK SNZ receiver under multitone jamming can be combated with the help of frequency offsets of multitone jamming.

网络化企业组织的特征分析

本文分析了基于信息资源管理的网络化企业组织模式产生的必然性,揭示了其发展的内在联系,探讨了其基本特性,阐述了其主要作用.

基于范畴论的知识单元组织与检索研究

随着数据和信息的日益增长,找到恰当的知识已成为真正的挑战和急待解决的任务。知识检索系统被看成是实现这一目标的下一代检索系统。然而如何构造知识的基本单元则是实现知识检索的关键问题,这一问题一直困扰着人们从数据检索、信息检索向知识检索的跨越。从知识的表示和用户需求来看,知识的基本单元是一个具有上下文的知识范畴。本文利用范畴论研究了知识对象的描述、用户认知的模型、语义映射原理,探讨了知识单元的内容结构和知识单元的物理结构及其映射关系。提出了范畴知识单元的信息模型。试图证明该模型的理论意义和应用前景。

企业信息技术管理组织模式及其历史演进

信息化时代，企业对信息技术的使用不仅是IT技术开发应用和系统操作维护的问题，更是一种对专门化服务的管理问题。对企业信息技术管理的组织体制设计，将在很大程度上决定这个企业能否有效地利用信息技术作用来提升其竞争和发展的能力。本文试图从历史发展进程角度分析和评价企业信息技术管理可资采用的几种典型组织模式及其各自的优缺点和适用条件，以对全能型单位剥离辅助业务提供一些操作性的指导意见。

组织健康研究述评

全球社会经济的急剧变化,使组织面临空前激烈的挑战和压力,长期以来被忽视的组织健康正受到学术界和企业界的关注和重视。文章总结梳理了健康和组织健康的概念、内涵,探讨了国内外对组织健康的量表开发和相关变量研究现状,并指出了组织健康研究对管理实践的意义以及该领域的研究趋势。

平衡计分卡在我国政府绩效评价中的应用

政府组织和企业组织在使命和目的上具有差异性,但在实现使命的组织平台和运作方式上存在相似性。平衡记分卡适应了时代发展的要求,是一种有效的组织管理和绩效评价的工具,它有助于政府使命和战略的实现。文章实际考察并分析了我国地方政府绩效评价中存在的四种问题,将平衡计分卡工具修正之后引入政府绩效评价和管理中,并提出了一个基于平衡计分卡理念的政府绩效管理循环模型,为我国政府实行绩效管理提供参考。

国内社会化标注研究的知识图谱分析

社会标注作为当前web2.0环境下一种重要的网络信息资源的组织方式,受到情报学研究领域学者们的广泛关注,国内相关的研究也越来越多。本文运用了社会网络分析法、共词聚类分析法和词频分析法对现有相关研究文献进行分析,揭示该领域的科学研究结构,重点分析该领域的科研合作团体及其研究主题、当前研究热点及未来研究趋势,旨在促进领域内科研合作与交流、提供社会标注领域的未来研究方向。

论学习过程的非线性机制

利用自组织理论解释了学习过程的非线性机制 ,为研究学习过程提供了一种新的方法和思路。

Adaptive multicascade attribute reduction based on quantum-inspired mixed co-evolution

Due to the fact that conventional heuristic attribute reduction algorithms are poor in running efficiency and difficult in accomplishing the co-evolutionary reduction mechanism in the decision table, an adaptive multicascade attribute reduction algorithm based on quantum-inspired mixed co-evolution is proposed. First, a novel and efficient self- adaptive quantum rotation angle strategy is designed to direct the participating populations to mutual adaptive evolution and to accelerate convergence speed. Then, a multicascade model of cooperative and competitive mixed co-evolution is adopted to decompose the evolutionary attribute species into subpopulations according to their historical performance records, which can increase the diversity of subpopulations and select some elitist individuals so as to strengthen the sharing ability of their searching experience. So the global optimization reduction set can be obtained quickly. The experimental results show that, compared with the existing algorithms, the proposed algorithm can achieve a higher performance for attribute reduction, and it can be considered as a more competitive heuristic algorithm on the efficiency and accuracy of minimum attribute reduction.

浅析排球主力二传手的组织能力与培养

本文通过对主力二传手各方面能力的调查分析，寻求培养主力二传手的有效途径。

知识组织与图书馆

知识组织是指把知识客体中的知识因子和知识关联表示出来，以便人们识别和了解知识，即知识的有序化。知识组织充分体现了图书馆的基本职能和社会职能：知识组织是知识经济时代图书馆生存和发展的需要；图书馆具有知识组织的传统和优势。知识组织包括文献资料分类、目录组织工作、书目情报工作，在图书馆文献资源建设的基本内容与环节中，知识组织属于关键因素，处于关节点地位，做好知识组织工作，会促进知识流通，发挥知识效用，使知识流形成良性循环，使知识在传播上更快速、更广泛，为读者获取知识提供更加有效的服务。

浅析直线职能制结构的功能缺陷及改良

直线职能制是我国多数企业采用的一种组织结构形式,具有统一指挥和专业管理的优点,但也存在着固有的功能缺陷,需通过实证分析,进行沟通、效率等方面的改良。

企业营销渠道可持续发展的自组织观

根据自组织理论,结合企业营销渠道系统发展存在的问题,在系统思维方式的启发下,引入了可持续发展的概念,阐述了企业营销渠道自组织的实现机制,给出了营销渠道可持续发展的途径。

从自组织理论看西部地区人力资源开发

西部的人力资源开发任重而道远。把区域性的人力资源开发看成是一个父系统,把影响区域人力资源开发的区域性人力资源市场发育程度、区域内企业人力资源开发看作是二个子系统,运用自组织理论说明了子系统之间的相互联系、相互作用可以提升父系统的演进。

基于层次社会组织目标的需求过程建模

将社会组织结构抽象为递归的社会组织域树,其顶层目标即为社会组织总体目标,总体目标层层分解为社会子组织域目标,从层次化的社会组织目标构建软件系统需求目标分解树,进而构建软件系统需求,并用层次着色Petri网对软件系统需求过程进行形式化建模,无缝连接社会组织目标与软件系统需求,为软件系统需求分析提出了一种自然、直观的需求过程建模方法。

罗伯特·达尔多元民主理论的社会背景认知

罗伯特·达尔是当代经典多元民主理论的集大成者。其早期的理论研究以行为主义方法为指导,进行实证研究,发现和归纳出美国民主生发的基本要素——以利益集团为代表的社会组织分享城市权力,通过社会来制约权力,有效地维系和推进了民主的运行。达尔的民主理论成果对探索社会治理路径、累积社会治理经验具有一定的启示和参考价值。

我国区域卫生规划的法律思考

区域卫生规划制度乃卫生服务提供公平的保障制度,也是我国医疗卫生体制改革中所要重构的重要制度之一。本文认为,区域卫生规划是一个公共选择的过程,并不排斥市场竞争。出于制度建构所需,本文对我国区域卫生规划制度进行了深刻反思,并提出了该项法律制度的重构意见和建议。